This part is a kind of semiconductor called MBI5034.

Function of this product has 16-Channel Constant Current LED Sink Driver.

Manufacturers : Macroblock

Image and pinout :

Some of the text within the PDF file :

Macroblock Datasheet MBI5034 16-Channel Constant Current LED Sink Driver with Compulsory Open-circuit Detection and Current Gain Features  16 constant-current output channels Small Outline Package Constant output current range: 3~45mA - 3-45mA @ 5V supply voltage - 3-30mA @ 3.3V supply voltage  Compulsory LED open-circuit detection - Open-circuit LEDs can be detected - Full panel, data independent - Flicker-free error detection GF: SOP24L-300-1.00  64-step programmable current gain: from 12.5% to 200%  Excellent output current accuracy, - Between channels: <±1.5% (typ.), and Shrink SOP - Between ICs: <±3% (typ.)  Fast response of output current - Min. output pulse width of OE : 20ns  Staggered delay of output, preventing from current surge  30M [ ... ]

MBI5034 PDF Datasheet Download